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I have a persistent oil leak under the X5. I have replaced the valve cover gasket (wasn't coming from there but... I can'really tell where its coming from, it collects in the skid plate and drips constantly but not enough that it more than annoying. It loses about a guart between oil changes. But the constant marking it's territory is starting to bug me.

Any ideas? Doesn't appear to be the pan gasket either. Thanks in advance for any tips you all can provide.

Unless you have other signs of CCV failure, I don't think that is the cause. When it clogged, your VCG would usually leaked and maybe smoke at start-up.
Oil Filter Housing gasket is a possible leak on the M54 engine besides the VCG.

I have now figured out that I have the oil filter housing gasket but it was hard to tell at first. I bought the oil filter housing gasket for $5 bucks but looks like you have to take alot apart to get to it. I know my brother can do it since he did the OSV (10 hour job).